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Vishay General Semiconductor - Diodes Division P4KE43AHE3/54
- Part No.:
- P4KE43AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE43AHE3/54.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,646
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Product details
Overview
P4KE43AHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. It features 400 W peak pulse power (10/1000 μs), 40.9–45.2 V breakdown voltage at 1 mA, 36.8 V stand-off voltage, 1.0 μA max reverse leakage, and clamps to ≤59.3 V at 6.7 A peak pulse current.
For engineers reviewing the P4KE43AHE3/54 datasheet, P4KE43AHE3/54 pinout, P4KE43AHE3/54 application, or P4KE43AHE3/54 equivalent, key selection criteria include clamping voltage margin relative to protected IC's absolute maximum rating, thermal derating above 25 °C, AEC-Q101 qualification for automotive use, and DO-41 lead-form compatibility with legacy through-hole PCB layouts.
Technical Context
This TVS diode operates as a voltage-clamping protection device in series with signal or power lines, triggering into avalanche conduction when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance and low incremental surge resistance, enabling consistent clamping performance across repetitive surge events.
The device is rated for 400 W peak pulse power under 10/1000 μs waveform with 0.01 % duty cycle, and supports 40 A non-repetitive forward surge current (8.3 ms half-sine). Its thermal resistance junction-to-lead is 66 °C/W, and it operates across -55 °C to +175 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 40.9–45.2 V at 1 mA - defines precise conduction onset for reliable overvoltage detection |
| Stand-off Voltage (VWM) | 36.8 V - maximum continuous working voltage before leakage exceeds 1.0 μA |
| Clamping Voltage (VC) | ≤59.3 V at 6.7 A IPPM - limits downstream voltage stress during surge events |
| Peak Pulse Power (PPPM) | 400 W (10/1000 μs) - determines energy-handling capability for common surge standards |
| Peak Pulse Current (IPPM) | 6.7 A - peak surge current the device safely diverts without failure |
| Junction Temperature Range | -55 °C to +175 °C - enables operation in under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with axial leads; cathode indicated by color band on body; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or low-side reference in unidirectional protection configuration |
| Cathode | Current exit point during forward conduction; marked with band | Connected to protected line (e.g., I/O, power rail) to clamp positive transients to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR tolerance (±5 %) and long-term parameter stability under thermal cycling |
| 400 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 Level 3 (1 kV line-to-line, 2 kV line-to-ground) surge immunity requirements |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring high-reliability protection |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD, relay bounce) |
| RoHS-compliant HE3 suffix | Indicates AEC-Q101 qualified, JESD 201 Class 2 whisker-resistant matte tin plating |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive surges above 36.8 V. Use Value: Clamps transients to ≤59.3 V, safeguarding 40 V-rated DC-DC converters and microcontrollers without derating headroom loss. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS on signal line to ground, leveraging fast response time and minimal loading. Use Value: Sub-1 ns response ensures clamping before sensitive op-amp inputs exceed absolute maximum ratings. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters subjected to mains-borne surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on 5–24 V output rails to prevent damage during open-load or feedback fault conditions. Use Value: 36.8 V VWM allows safe operation across full output regulation range while maintaining 10+ V clamping margin. |
Use Scenario: Primary protection for Ethernet PHY interfaces exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage unidirectional suppressor on power-over-Ethernet (PoE) feed lines before DC-DC isolation. Use Value: 400 W rating handles multi-pulse surge sequences per GR-1089-CORE, reducing need for secondary protection stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A | Surface-mount SMB package; same VBR (43.2–47.8 V), lower PPPM (600 W), higher IPPM (13.9 A) | Requires PCB redesign for SMD layout; better suited for high-density consumer boards | Select when board space is constrained and reflow assembly is available |
| P4KE43CA | Bidirectional variant; identical VBR/VWM but symmetric clamping in both polarities; same DO-41 package | Required for AC-coupled or differential signal lines where negative transients must also be suppressed | Select only if bidirectional protection is mandated by signal polarity or interface standard |
Compared with SMBJ43A and P4KE43CA, the P4KE43AHE3/54 offers proven through-hole mechanical robustness for high-vibration environments, AEC-Q101 validation for automotive deployment, and direct drop-in replacement for legacy DO-41 designs without layout changes.
Availability
P4KE43AHE3/54 is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor conditioning, and telecom line card protection requiring stable component supply and long-lifecycle support.
Supply support for P4KE43AHE3/54 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The P4KE43AHE3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, cost-effective transient suppression in harsh environments including automotive, industrial, and infrastructure applications.
FAQ
What is the breakdown voltage tolerance of P4KE43AHE3/54?
The P4KE43AHE3/54 has a breakdown voltage (VBR) range of 40.9 V to 45.2 V at 1 mA test current, corresponding to a ±5 % tolerance about the nominal 43 V rating. This tight tolerance ensures predictable clamping behavior across production lots and temperature extremes, critical for protecting circuits with narrow voltage margins.
Is P4KE43AHE3/54 suitable for automotive applications?
Yes, the P4KE43AHE3/54 carries the HE3 suffix, indicating AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. Its -55 °C to +175 °C operating range, glass-passivated junction, and 400 W surge rating make it appropriate for engine control units, body electronics, and infotainment power rails per ISO 7637-2 and ISO 16750-2 requirements.
How does the clamping voltage of P4KE43AHE3/54 compare to its breakdown voltage?
The P4KE43AHE3/54 clamps to ≤59.3 V at 6.7 A peak pulse current, which is approximately 38 % above its minimum breakdown voltage of 40.9 V. This clamping ratio reflects low dynamic impedance and ensures effective protection of 48 V-rated components while maintaining sufficient margin below their absolute maximum ratings.
What is the meaning of the "HE3/54" suffix in P4KE43AHE3/54?
The "HE3" denotes RoHS-compliant, AEC-Q101 qualified construction with JESD 201 Class 2 whisker-resistant matte tin plating; "/54" specifies packaging in 13-inch paper tape and reel with 5500 units per reel. This ordering code ensures traceable, automotive-grade material with standardized logistics handling.
Can P4KE43AHE3/54 replace P4KE43A-E3/54 in existing designs?
Yes - P4KE43AHE3/54 is a direct functional and mechanical replacement for P4KE43A-E3/54, sharing identical electrical specs, DO-41 package, and pinout. The HE3 version adds AEC-Q101 qualification and enhanced plating, making it suitable for upgraded automotive or industrial deployments without PCB or schematic changes.
P4KE43AHE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 6.7A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KE43AHE3/54 FAQ
1.How can I place an order for P4KE43AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE43AHE3/54 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for P4KE43AHE3/54 reliable?
The price and inventory of P4KE43AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE43AHE3/54 is usually 5 days.
3.What payment methods are accepted for P4KE43AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE43AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE43AHE3/54?
P4KE43AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE43AHE3/54 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for P4KE43AHE3/54?
For technical support, including P4KE43AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE43AHE3/54 requirements.
6.How does Aetrix verify that P4KE43AHE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE43AHE3/54 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that P4KE43AHE3/54 meets industry standards.
7.What is the process for return or replacement of P4KE43AHE3/54?
All P4KE43AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE43AHE3/54, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The P4KE43AHE3/54 part is unused and in its original packaging.
Return procedure for P4KE43AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE43AHE3/54 Tags
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